| DATE | PLAYER | DESCRIPTION |
| 05/20/2012 | Matt Palmer | Contract purchased from Tucson (AAA) |
|
05/20/2012 | Nick Vincent | Optioned to Tucson (AAA) |
|
05/20/2012 | Cory Luebke | Transferred to 60-day disabled list |
|
05/19/2012 | Mark Kotsay | Placed on 15-day disabled list |
|
05/19/2012 | Blake Tekotte | Recalled from Tucson (AAA) |
|
05/18/2012 | Nick Vincent | Recalled from Tucson (AAA) |
|
05/18/2012 | Tim Stauffer | Placed on 15-day disabled list |
|
05/18/2012 | James Darnell | Placed on 15-day disabled list |
|
05/17/2012 | Jason Bartlett | Placed on 15-day disabled list |
|
05/17/2012 | Everth Cabrera | Recalled from Tucson (AAA) |
|
05/17/2012 | Brian Tallet | Released |
|
05/17/2012 | Orlando Hudson | Released |
|
05/17/2012 | Alexi Amarista | Recalled from Tucson (AAA) |
|
05/17/2012 | Eric Stults | Claimed off waivers from Chicago White Sox |
|
05/13/2012 | Tim Stauffer | Activated from 15-day disabled list |
|
05/13/2012 | Josh Spence | Optioned to Tucson (AAA) |
|
05/11/2012 | Joe Wieland | Placed on 15-day disabled list |
|
05/11/2012 | James Darnell | Recalled from Tucson (AAA) |
|
05/08/2012 | Blake Tekotte | Optioned to Tucson (AAA) |
|
05/08/2012 | Micah Owings | Transferred to 60-day disabled list |
|
05/08/2012 | Alex Hinshaw | Contract purchased from Tucson (AAA) |
|
05/05/2012 | Miles Mikolas | Contract purchased from Tucson (AAA) |
|
05/05/2012 | Logan Forsythe | Transferred to 60-day disabled list |
|
05/05/2012 | Huston Street | Placed on 15-day disabled list |
|
05/04/2012 | Brad Brach | Recalled from Tucson (AAA) |
|
05/02/2012 | Kyle Blanks | Transferred to 60-day disabled list |
|
05/02/2012 | Cory Luebke | Placed on 15-day disabled list |
|
05/02/2012 | Jeff Suppan | Contract purchased from Tucson (AAA) |
|
04/28/2012 | Jeremy Hermida | Placed on 15-day disabled list |
|
04/28/2012 | Blake Tekotte | Recalled from Tucson (AAA) |
|
04/26/2012 | Dustin Moseley | Transferred to 60-day disabled list |
|
04/26/2012 | Dale Thayer | Contract purchased from Tucson (AAA) |
|
04/26/2012 | Micah Owings | Placed on 15-day disabled list |
|
04/16/2012 | Brad Brach | Optioned to Tucson (AAA) |
|
04/16/2012 | Mark Kotsay | Activated from 15-day disabled list |
|
04/14/2012 | Joe Wieland | Contract purchased from Tucson (AAA) |
|
04/14/2012 | Kyle Blanks | Placed on 15-day disabled list |